Phonograph construction



Patente dDec. r I

SEIT NA A AM; GOLDBERG, or BnooKLY X nEWt'YO RK, assreno n corner 1AMusic ooiyrrelv sgo i YORK, n, Y-., 'A' CDR-BOBATIQN or vnw 2033,]rnonoenarn oonsrntiorrong l Application filed November 2'0, 1925. SerialNo. 70,356.

This invention relates to a phonograph orderto connect the tone arm 16in a subconstruction and has particular reference to stantially flexiblemanner to the amplifying I the construction of a phonograph tone. arm.chamber 13 so'that it can be readily swung An object of the invention isto provide a into and out of its. normal position, I, pro- 5 simple andefficient construction of tone arm vide a tubular connection betwen thetone 6 for a phonograph particularlyof the. portarm and the amplifyingelement. This able typewhereby the tone arm can be very tubular elementvpreferably is in the form compactly stowedaway when notxinuse and of a'T shapedfmetal casing 18; "The cap of very readily movedrin'to anoperative posithe T element at one: end opens .into the 10 tion when thephonograph is to be operated. amplifying element 13 and at the otherend'65 i Ajfurther object. concerns the provision bearsagamst the wallof the cover. The of a simple construction whereby a phon'ostem of the Telement 18 is provided with a graph tone arm is connected to ana'mplifyrotatable sleeve 19 which engages the'stem ing chamber throughthe intermediaryof a by reason of the fact that the stem has a aconnecting devicewhich'is very simple in its rib 20 thereon andthesleeve 19 has a groove 70 construction, economical to manufacture, du-21. thereon, which interengage. The rear rable in use and easy tooperate. 1 end of the tone arm is pivotally connected 'The invention isillustrated in the drawto the sleeve 19'by reason of two pins, one ings,of which'Figure 1 is a perspective view of which 422', is shown inFigure 2; By s 20 of the portable phonograph showing the reasonlof thepins 22 thetone arm is pivot-775' tone arm inoperative position inconnection allymountedonthe sleeve 19. By reason with a disk and withthe amplifying chamof the engagement of ,the. 'rib '20 and the her. 1 Ix groove21 the sleeve 19 is rotatably mounted Figure 2 is a plan viewpartially in section, on the T element .18. In addition the T 25 showingthe tone arm inthe position it aselement is rotatably mounted withrespect 80- sumes when stowed away in the cover of the to the amplifyingelement 13. e I phonograph. In the operation of the device therefore, Ingeneral, the invention relates to a the tonearm' can be stowed away asshown phonograph having a box and a pivoted in Figure 2 and yet when itisd esired to .30 cover. 'This cover is adapted to contain an use'thetone arm the operatormerelygrasps 85 amplifying chamber and a phonographtone the tone arm and moves 'it upwardly and arm thereon when not inuse. The tone arm outwardly to the position shown in Figure is adaptedto beswung out of the cover to 1, this operation being made possible bycontact with a disc when the phonograph is reason of the extremeflexibility of the con-' in use. The connection between the tonestruction whereby-thetone arm is connected 90 or arm and the amplifyingchamberis preferto'i the amplifying element. Preferably ably inthe formof a tubular metal device whenfthe tone. arm'is stowed away in the.which is pivotally associated not only with coverja latch finger 23preferably pivoted the amplifying 'chamber but with the tone on theamplifying element is moved to a J 40 arm, permitting a wide latitudeofmoveposition overthe tone arm to hold it in place. 95 ment with thetone arm,"not only with re It will be observed that the type of c0nspect to the connectingelement but alsowith nection between theamplifying chamber'and respectto the amplifying chamber, so that thetone arm isof the nature of a universal the'tone arm'can be readilyswung into and joint, being extremely flexible and enabling i out of itsoperative position. the tone arm to be moved in almost anyde- 100 In thepreferred form of the inventionl sired positionand especially tobefdisposed have a phonograph box 10 which mayconthetwopositions shown, none of which -tain a special mechanism for operating a it is makingcontact with a phonograph V turn table, on whioha disc ll-can'be maiI1,Tecord md' BJ her inf whichit is stowed p p tained. Associated with thebox 10 is a away inthecover'ofthe box; cover 12. In the cover 12 isformed an /Vhat Icla'im is:

amplifying chamber 13v having an outlet end In a phonograph, a box-likec'abinet cover," I v V c 14 and an inlet end 15. Also disposed norsaidcover'having,angularly disposed walls mally within the cover isatone arm16 havwhich provide an: amplifying chamber at' j ing the usual sound box'17 thereonavln one side, of the cover "within the same, a-n

7 tone arm, a hollovvlconnect-ing element connecting the amplifyingchamberv with the interior of the tone arm, means supporting theconnecting element for turning movement, a ring member turnable-on oneend of said connecting element, and a pivotal connection between one endof the tone arm and the ring member, the connecting elemoved into andout of the space adjacent the amplifying chamber in said cover, alsopermitting the radial and up and down movements of the tone arm when inaposition for the playing of a record. 7

SIFTON ABRAHAM GOLDBERG.

